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diff --git a/lib/Target/PIC16/PIC16InstrFormats.td b/lib/Target/PIC16/PIC16InstrFormats.td
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+++ b/lib/Target/PIC16/PIC16InstrFormats.td
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+//===- PIC16RegisterInfo.td - PIC16 Register defs ------------*- tblgen -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source 
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+//===----------------------------------------------------------------------===//
+//  Describe PIC16 instructions format
+//
+//  All the possible PIC16 fields are:
+//
+//  opcode  - operation code.
+//  f       - 7-bit register file address.
+//  d       - 1-bit direction specifier
+//  k       - 8/11 bit literals
+//  b       - 3 bits bit num specifier
+//
+//===----------------------------------------------------------------------===//
+
+// Generic PIC16 Format
+class PIC16Inst<dag outs, dag ins, string asmstr, list<dag> pattern>
+	: Instruction 
+{
+  field bits<14> Inst;
+
+  let Namespace = "PIC16";
+
+  dag OutOperandList = outs;
+  dag InOperandList  = ins;
+
+  let AsmString   = asmstr;
+  let Pattern     = pattern;
+}
+
+
+//===----------------------------------------------------------------------===//
+// Byte Oriented instruction class in PIC16 : <|opcode|d|f|>
+//===----------------------------------------------------------------------===//
+
+class ByteFormat<bits<6> op, dag outs, dag ins, string asmstr,
+         	 list<dag> pattern>
+	:PIC16Inst<outs, ins, asmstr, pattern> 
+{
+  bits<1>  d;
+  bits<7>  f;
+
+  let Inst{13-8} = op;
+
+  let Inst{7} = d;
+  let Inst{6-0} = f; 
+}
+
+//===----------------------------------------------------------------------===//
+// Bit Oriented instruction class in PIC16 : <|opcode|b|f|>
+//===----------------------------------------------------------------------===//
+
+class BitFormat<bits<4> op, dag outs, dag ins, string asmstr, list<dag> pattern>
+         : PIC16Inst<outs, ins, asmstr, pattern> 
+{
+  bits<3>  b;
+  bits<7>  f;
+
+  let Inst{13-10} = op;
+
+  let Inst{9-7} = b;
+  let Inst{6-0} = f; 
+}
+
+//===----------------------------------------------------------------------===//
+// Literal Format instruction class in PIC16 : <|opcode|k|>
+//===----------------------------------------------------------------------===//
+
+class LiteralFormat<bits<6> op, dag outs, dag ins, string asmstr, 
+		    list<dag> pattern>
+	: PIC16Inst<outs, ins, asmstr, pattern> 
+{
+  bits<8> k;
+
+  
+  let Inst{13-8} = op;
+
+  let Inst{7-0} = k; 
+}
+
+//===----------------------------------------------------------------------===//
+// Control Format instruction class in PIC16 : <|opcode|k|>
+//===----------------------------------------------------------------------===//
+
+class ControlFormat<bits<3> op, dag outs, dag ins, string asmstr, 
+		    list<dag> pattern>
+	:PIC16Inst<outs, ins, asmstr, pattern> 
+{
+  bits<11> k;
+
+  
+  let Inst{13-11} = op;
+
+  let Inst{10-0} = k; 
+}
+
+//===----------------------------------------------------------------------===//
+// Pseudo instruction class in PIC16
+//===----------------------------------------------------------------------===//
+
+class Pseudo<bits<8> op, dag outs, dag ins, string asmstr, list<dag> pattern>:
+      PIC16Inst<outs, ins, asmstr, pattern>
+{
+   let Inst{13-6} = op;
+}